> We can just force all airborne vehicles to talk to each other with some universal collision avoidance/traffic routing protocol. It's not exactly what you des

> We can just force all airborne vehicles to talk to each other with some universal collision avoidance/traffic routing protocol. It's not exactly what you described, but in the US, the FAA already has a requirement for aircraft to broadcast their position and velocity in all but the least congested airspace by 2020 [1]. This has been in the works for over a decade [2], and among other things, the information provided by this system can be used to augment existing collision avoidance schemes [3]. [1] https://www.faa.gov/nextgen/programs/adsb/faq/#o2 https://www.faa.gov/nextgen/programs/adsb/faq/#o2 [2] https://en.wikipedia.org/wiki/Automatic_dependent_surveillance_–_broadcast#US_implementation_timetable https://en.wikipedia.org/wiki/Automatic_dependent_surveillan... [3] https://en.wikipedia.org/wiki/Traffic_collision_avoidance_system#Relationship_to_automatic_dependent_surveillance-broadcast_.28ADS-B.29 https://en.wikipedia.org/wiki/Traffic_collision_avoidance_sy...